The machine on the left is for recovering crashed aircraft in particular those that have made a 'wheels up' landing. I am not sure of the manufacturer but it could be an American make. The one to the right is Coles crane mounted on what looks like a 6X4 or 6X6 chassis. Most of the Coles mobile cranes used AEC chassis. The crane on the extreme right is difficult to identify but it has the appearance of an Iron Fairy.